SAP + Siebel & others
During my time at an SAP R/3 implementation company and Sky Technologies (SAP integration specialist) I was involved in many projects and implementation activities relating to code development, integration with external systems, integration with mobile devices and configuration activities around various modules.
Some of the other ERP products that I have had exposure to in various forms include Oracle, Siebel, Maximo, Microlistics, Uniware and many others